SELF CLOSING VALVES STRAIGHT TYPE Marine Drain Protection

The SELF CLOSING VALVES STRAIGHT TYPE (also known as straight spring-loaded drain valves or deadman valves) are specialized marine safety valves engineered for inline installation to ensure automatic, immediate flow shut-off upon release of the operator lever. By returning instantly to a fully sealed closed position when unattended, these valves prevent accidental fluid escape, oil spills, and uncontrolled tank drainage across shipboard systems.

Manufactured in full compliance with international marine engineering standards—including BS 1873 and ASME B16.34—the SELF CLOSING VALVES STRAIGHT TYPE undergo rigorous shell pressure and seat leakage testing per API 598 and BS 5146 standards. Standard production covers sizes up to 100 mm (with requirements exceeding 100 mm supplied directly via Voyage Marine Automation), crafted from corrosion-resistant alloys built to handle marine fuels, oils, and sea spray.

Key Features of the SELF CLOSING VALVES STRAIGHT TYPE

• In-Line Straight-Through Flow: Straight pattern design allows seamless inline installation along horizontal or vertical pipe runs while maintaining low fluid resistance.

• Fail-Safe Deadman Lever Operation: Internal spring mechanism instantly returns the valve disc to its seat as soon as the manual lever is released by the operator.

• Global Standard Compliance: Engineered in accordance with BS 1873 and ASME B16.34 guidelines to meet major classification society requirements (e.g., DNV, ABS, LR, RINA).

• API 598 & BS 5146 Pressure Tested: 100% factory pressure and seat tightness verified for bubble-tight isolation under system operating head.

• Marine Metallurgy Options: Cast in durable marine-grade alloys—Gunmetal (GM), Nickel Aluminium Bronze (NAB), Stainless Steel (CF8/CF8M), and Cast Carbon Steel (WCB)—for resistance against chemical erosion and saltwater corrosion.

Primary Applications

• Shipboard Oil & Fuel Lines: Fuel oil day tank drains, lube oil sampling headers, and oil purifier room drain lines

• Engine Room Machinery: Waste oil collecting manifolds, bilge water sampling points, and drip tray drains

• Marine Sounding Systems: In-line sounding pipe isolation and liquid level gauge testing points

Technical Specifications

Package Contents

• 1 × SELF CLOSING VALVES STRAIGHT TYPE Unit (Straight Pattern)

• Heavy-Duty Lever Assembly & Internal Spring Unit

• API 598 & BS 5146 Factory Pressure Test Certificate